Improvement in crow-bars



UNITED STATES PATENT OFFICE.

ABR-AM V. BERRY, OF JACKSON, MICHIGAN.

IMPROVEMENT IN CROW-BARS.

Specticatiun forming part ot' Letters Patent No. 146,640, (laHlJax;11ax-y 20,1?74; applcainn tiled November 24, 1873i.

To all whom it may concern Be it `known that I, ABRAM V. BERRY, of Jackson, Jackson county, Michigan, have invented an Angular and Adjustable Steel Fulcrum for the Heel of a Pinch-Bar, of which the following is a specification The object of the invention is to prevent the sliding or slipping of a pinch-bar on arailroad track or rail when used for the moving of ears and for various other uses. consists of an angular piece of steel inserted in a'transverse slot in the heel of a pinch-bar, forming the fulcrum of the bar, and which presents an angular edge of about one-eighth of an. inch above the surface of the heel of the bar. When this angle comes Worn, the fulcrum can be easily taken out and replaced, so as to present one of the other angles or edges; also, when the second edge becomes Worn, it may again bechanged; and, in the event of all the angles becoming Worn, anew fulcrum can be substituted at a trifling expense.

The angles of the fulcrum may be either obtuse, rectangular, or acute.

The invention The one represented in the drawing hereto attached is an equilateral triangle.

111 the drawing hereunto attached, A represents the angular slot and steel fulcruin for which Letters Patent are asked; B B, the pinch-bar.

The benefits of this invention are claimed to facility with Which one angle or one fulcruin can be substituted for another.

pinch-bar is believed to be novel and useful.

What I claim as myinventioinand desire to secure by Letters Patent, is-

A pinch-bar having an angular detachable purpose described.

ABRAM v. BERRY.

\Vitnesses:

MELVILLE MCGEE, WM. SEWARD GRIDLE Y.

be its cheapness, its eicency, the ease and The adjustable fulcrum in the heel of a steel fulcrum, A, substantially as and for the 

